Yeah try another port. You can see the reason in the error Message. Usually a router can only forward a port to one device. In most cases you get this error message if the forwarding port was already forwarded by another forwarding rule.

The main problem is that no one is reading the readme`s (xebuild) before starting the update procedure. The winbond support in XeBuild 1.19 is experimental. You have to use the right commands, in xebuild command line for building the correct Image for your winbond console.

You can find these special kind of cpu on shops like aliexpress. Maybe its from a mass production like rubensyama said. If you have a cpu Key that is matched your nand of your console, you can use the cpu. XeBuild contains special patches for it.

Emoose, gligli, tuxuser and xvmm give us a new tool for Xbox One Dev gambling. This new small utility allows you to get some infos from your Xbox One console. As a special feature you can dump your nand. In the first place, its a tool for researches on Xbox One OS.
Please read the following release post to get all important infos:
Source: Github.com
XRF-master.zip